第一件事就是要求出面积元。
一个平面物体的密度是每单位面积元的质量。
The density for a flat object would be the mass per unit area.
即考虑曲面的面积元δ
S Namely, you would consider a small element of a surface delta S.
本文介绍了格点理论在矩量法中的应用。引入了格点的模糊面积元概念。文中还给出了数据实例。
In this paper the lattice spot theory for moment-method solution is presented. A new concept of fuzzy surface element is introduced. Some numerical results are given.
这里使用dS而不是dA，因为我习惯把dA看成是，坐标平面中的面积元，就像在二重积分中所做的那样，待会大家会了解。
I am using dS rather than dA because I still want to think of dA as maybe the area in one of the coordinate planes like the one we had in double integrals. You will see later where this comes in.
这些皱褶和沟回结构大大增加了新皮层的表面积，为数十亿的神经元提供了空间。
The folds increased the surface area available for the billions of neurons in the human neo-cortex.
新造林不分耕地、荒山，按验收确认面积每亩给予50元的一次性补助。
New afforestation regardless of cultivated land, mountain, by acceptance confirmation area per acre giving $ 50 one-time grants.
我们计算的是，整个区域的面积微元dA的总和。
Really, what we are doing is summing dA over the entire region.
中国人均住房面积将达到20m2，另外，在中国人均收入将增长到每年2000元人民币。
A per capita housing area in China will reach 20m2, in addition, a per capita income will be raised to 2000 RMB per year in China.
已退休的医生胡元， 80 ，违背了其中的少数仅存的庇护所，为被遗弃的宠物，她摇摇欲坠的家中古代长头婧面积北京。
Retired doctor Hu Yuan, 80, runs one of the few remaining refuges for abandoned pets in her ramshackle home in the ancient Long Tou Jing area of Beijing.
对研究花键冷滚压成形过程中的接触面积和有限元模型的简化具有重要的意义。
It is significant to study the contact area in rolling process and simplify model of finite element.
公司占地面积100多亩，现有各类管理和技术人员162名，年销售额过亿元的跨地区企业。
Company covers an area of 100 mu, the existing various management and technical personnel in 162, had annual sales of billions of trans-regional enterprises.
民心佳园的租金根据户型和面积浮动，30平米的单间公寓略低于300元人民币（合46美元），三居室略高于600元。
At Minxin Garden, rents range from just below Rmb300 ($46) for a 30 square metres studio to just over Rmb600 for a three-bedroom flat.
叶面积消长动态符合一元二次方程变化曲线；
The dynamics of leaf area accorded with the curves of second-order equation.
通过有限元程序对点支式玻璃幕墙索桁架支承体系中索桁架结构高度、拉杆截面积、拉杆预拉力和玻璃面板厚度对其受力性能的影响进行了研究。
The main parameters considered are height of the cable truss, area of cross section of tensile bar, pre-tension of tensile bar and thickness of glass panel.
为了获取三维数值化概念机模型的浸润面积和横截面积等几何特性，本文提出了一种基于离散化面元的估算方法。
To estimate the geometric characteristics, especially wet areas and section areas, of three dimensional numerical conceptual aircraft models, a method based on surface elements is proposed.
建筑面积平均约为每平方英尺港币五千元，实用面积约每平方英尺七千三百元。
The average gross rate is about five thousand Hong Kong dollars per square foot and the net rate is around seven thousand and three hundred Hong Kong dollars per square foot.
已退休的医生胡元，80，违背了其中的少数仅存的庇护所，为被遗弃的宠物，她摇摇欲坠的家中古代长头婧面积北京。
Retired doctor Hu Yuan, 80, runs one of the few remaining refuges for abandoned pets in her ramshackle home in the ancient Long Tou jing area of Beijing.
初步探讨了对激光干扰CCD成像的严重程度进行量化的三种方法——饱和面积法、灰度突变元法、相关度法。
Superficial discussion on the method of quantificationally evaluating the extent of disturbing of laser to video of CCD, such as area of saturation, chop of gray level, image correlativity.
单位面积阳性神经元数即每平方毫米面积中所含阳性神经元数量。
Number of positive neurons of unit area refers to the positive neuron counts in each square millimeter.
对小鼠脑冷冻伤，能减少死亡率及损伤面积，对神经元减少的作用不明显。
For mouse cold injury-induced trauma, minocycline reduced death rate and lesion area, but did not remarkably improve behavior and neuron loss.
对此采用一套以弹性有限元分析为基础的方法，对大面积混凝土梁板结构温度应力进行分析，可为超大建筑物的设计提供依据。
Adopting elastic finite element analysis method to analyze temperature stress in large area concrete beam-slab structure may provide basis for extra huge building design.
对于中、低分辨率遥感图像来说，单个像元的面积较大，且混合像元现象严重，图像分割会产生较大的误差。
Image segmentation brings errors in low or medium-resolution remote sensing images because a single pixel covers a larger area and there are a lot of mixed pixels.
目的探讨亚低温对大面积脑梗死患者血清神经元特异性烯醇化酶(nse)和超氧化物歧化酶(SOD)的影响及临床意义。
ObjectiveTo investigate the effect of mild hypothermia on neuron specific enolase (NSE) and superoxide dismutase (SOD) in serum of patients with large-area cerebral infarction.
要求：分别用成员函数和友元函数来求圆的面积和周长。
Requirements: member function respectively, and a friend function to find area and circumference of a circle.
在论述铀放射系不平衡原理的基础上，提出了地下水三元补给体系混合比的面积坐标算法。
According to the basic principle in uranium series disequilibrium, a calculating method for the mixing ratio of a three source recharge system of groundwater is raised.
在论述铀放射系不平衡原理的基础上，提出了地下水三元补给体系混合比的面积坐标算法。
According to the basic principle in uranium series disequilibrium, a calculating method for the mixing ratio of a three source recharge system of groundwater is raised.
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